<template>
  <view class="cart-container"  v-if="cart.length !== 0">
    <!--收货地址-->
    <my-address></my-address>
    
    
    <!--列表的标题区域-->
    <view class="cart-title">
      <!--左侧图标-->
      <uni-icons type="shop" size="18"></uni-icons>
      <!--右侧文本-->
      <text class="cart-title-text">购物车</text>
    </view>
    <!--渲染购物车的数据-->
    <uni-swipe-action>
      <block v-for="(goods, i) in cart" :key="i">
        <!-- uni-swipe-action-item 可以为其子节点提供滑动操作的效果。需要通过 options 属性来指定操作按钮的配置信息 -->
        <uni-swipe-action-item :right-options="options" @click="swipeActionClickHandler(goods)">
          <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    <my-settle></my-settle>
  </view>
  
  
  <!-- 空白购物车区域 -->
    <view class="empty-cart" v-else>
      <image src="/static/cart_empty@2x.png" class="empty-img"></image>
      <text class="tip-text">空空如也~</text>
    </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  import {mapState, mapMutations} from 'vuex'
  export default {
    mixins: [badgeMix],
    computed:{
      ...mapState('m_cart',['cart'])
    },
    data() {
      return {
           options: [{
              text: '删除', // 显示的文本内容
              style: {
                backgroundColor: '#C00000' // 按钮的背景颜色
              }
            }]
      };
    },
    methods: {
      ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'removeGoodsById']),
      // 商品的勾选状态发生了变化
      radioChangeHandler(e) {
        //console.log(e) // 输出得到的数据 -> {goods_id: 395, goods_state: false}
         this.updateGoodsState(e)
      },
      // 商品的数量发生了变化
      numberChangeHandler(e) {
         this.updateGoodsCount(e)
      },
      // 点击了滑动操作按钮
      swipeActionClickHandler(goods) {
         this.removeGoodsById(goods.goods_id)
      }
    }
  }
</script>

<style lang="scss">
.cart-container{
  padding-bottom: 50px;
}
.cart-title{
  height:40px;
  display: flex;
  align-items: center;
  padding-left:5px;
  border-botto:1px solid #efefef ;
  .cart-title-text{
    font-size:14px;
    margin-left:10px;
  }
}
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
